Hungarian Radiology

[Breast malignancies: review of the year 2008/2009 radiological diagnostics and therapy news - Onco Update, 2010]

FORRAI Gábor

MAY 15, 2010

Hungarian Radiology - 2010;84(01)

[Systematic review of the recent articles of the years 2008/2009 about breast tumours’ radiological diagnostics and guided therapy, the actual place of the imaging and interventional methods are presented.]

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Hungarian Radiology

[Leaping forward - Hungarian Radiology Online has started!]

LOMBAY Béla

Hungarian Radiology

[Dual energy computed tomography - dual-source CT]

WENINGER Csaba, CSETE Mónika, SZUKITS Sándor, DÉRCZY Katalin, VÁRADY Edit, BATTYÁNY István

[The authors describe fundamentals of computed tomography (CT) examination performed by dual-source, dual energy CT scanner. The special applications of dual energy acquisition are demonstrated, e. g. examination of pulmonary perfusion in case of embolism, bone subtraction during CT angiography, differentiation of various stones and calcifications. The dual energy acquisition can improve the accuracy and sensitivity of the radiological diagnosis.]

Hungarian Radiology

[Radiological assessment of the combined high tibial osteotomy in the frontal plane]

PAPP Miklós, KÁROLYI Zoltán, FAZEKAS Péter, SZABÓ László, PAPP Levente, RÓDE László

[INTRODUCTION - High tibial osteotomy (HTO) is a generally accepted treatment for medial unicompartmental osteoarthritis of the knee with varus alignment. The main principle of HTO is to achieve a transfer of loading from diseased, arthritic areas of the joint to areas with relatively intact, healthly cartilage. This stress reduction can be achieved with correction of the loading axis. A stress reduction occurs in the medial compartment of the knee when the loading axis is transferred from the medial compartment to just lateral to the center of the joint. PATIENTS AND METHODS - We performed radiological assessment of 52 knees preoperatively and after combined high tibial osteotomy (CO) in the 10th postoperative week, in the 12th postoperative month and in the 5th postoperative year on a standing weight-bearing anteroposterior radiograph. CO involved performing a proximal osteotomy parallel to the tibial plateau, followed by a distal osteotomy extending from the lateral part of the tibia to the line of the proximal osteotomy at the center of the tibial condyle. After closure of the lateral part of the osteotomy and consequent opening of the medial part, the removed lateral bone wedge was transferred to the gap on the medial side. Pre- and postoperatively we measured the lateral angle between the anatomic axis of the femur and the distal articular surface of the femur (FCFS), the lateral angle between the anatomic axis of the tibia and the proximal articular surface of the tibia (TP-TS) and the lateral angle between the distal articular surface of the femur and the proximal articular surface of the tibia (the articular component of the varus deformity FC-TP). We determined the FTA as a sum of FC-FS, TP-TS and FC-TP. RESULTS - The FC-TP, the TP-TS and the FTA decreased significantly after CO according to data measured in the 10th postoperative week. We achieved the planned correction (FTA 171-169°) in 77% of cases. Undercorrection (FTA ≥172°) was detected in 7, overcorrection (FTA ≤168°) was noted in 5 cases. We detected significant loss of correction between the 10th postoperative week and the 12th postoperative month (the FTA increased significantly, the loss of correction was 1° in 26 cases, 2° in 7 cases). The valgus alignment did not increase in any case. The articular component did not change in 36 cases. We did not note significant loss of correction and the valus alignment did not increase in any case between the 12th postoperative month and 5th postoperative year. We noted the recurrence of varus deformity in 1 case. We detected loss of correction due to increasing articular component in further 4 cases. The FC-FS did not change during the first 5 postoperative years. CONCLUSION - If we achieved the planned correction (FTA 171-169°) according to data measured in the 10th postoperative week on a standing weight-bearing anterposterior radiographs, we did not detect recurrence of varus deformity in any case during the first 5 postoperative years. If the articular component (FC-TP) did not change between the 12th postoperativ month and the 5th postoperative year (in 61.5% of cases), in our opinion we achieved the optimal correction.]

Hungarian Radiology

[Functional disorders of the pharynx associated with gastroesophageal reflux disease]

SZÁNTÓ Dezső

[The reduced tone of the lower esophageal sphincter, hypomotility of esophagus and dilatory evacuation of stomach are causes of gastroesophageal reflux disease (GERD). Primary damages of esophageal motility lead to regurgitation of gastric content. The evolution of various disorders of esophagus, pharyngoesophageal junction and hypopharynx depend on regurgitant volume gastric and bile acids. The barium swallow well detects mucosal abnormalities and uncordinated contractions of pharyngeal constrictor and levator muscles moreover dyskinesia of upper and lower esophageal sphincters. According to the database of evidence-based medicine (Cochrane Library), sensitivity of barium pharyngo-esophagograms is in mild grade cases 72-74%, in moderate and in severe ones 88-93% and 100%, respectively. Till now laryngeal stasis, penetration and aspiration, dysmyotonia of lateral wall, cricopharyngeal bar, waterfall, vallecular balloon, besides double anterior wall signs of pharyngeal malfunctions were reviewed. We have to also consieder respiratory, cardiovascular and neurological manifestations.]

Hungarian Radiology

[Use of imaging in the up-to-date diagnosis and screening of breast cancer - 2nd Kecskemét Breast Cancer Consensus Conference, 2009]

FORRAI Gábor

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Clinical Neuroscience

The applications of transcranial Doppler in ischemic stroke

FINNSDÓTTIR Herdis, SZEGEDI István, OLÁH László, CSIBA László

Background: This overview provides a summary of the applications of transcranial Doppler (TCD) in ischemic stroke. Results: A fast-track neurovascular ultrasound protocol has been developed for detecting occlusion or stenosis. The technique is more reliable in the carotid area than in the posterior circulation. By monitoring the pulsatility index the in­crea­sed intracranial pressure can be diagnosed. TIBI score was developed for grading residual flow. TCD has been shown to accurately predict complete or any recanalization. Regarding recanalization, TCD has a sensitivity of 92%, a specificity of 88%, a positive predictive value of 96%, a negative predictive value of 78% and an overall accuracy of 91%, respectively. Sonothrombolysis seemed to be a promising application but randomized controlled trials have shown that it does not improve clinical outcome. TCD examination can detect microembolic signals (MES) which are associated with an increased risk of stroke. Micro­em­boli were detected in symptomatic and asymptomatic carotid artery stenosis and during carotid endarterectomy. The number of microemboli can be decreased by antithrombotic therapy. Contrast en­chan­ced examination and Valsalva maneuver with continuous TCD monitoring can accurately screen for right-to-left shunt.

Clinical Neuroscience

[F-DOPA PET/MR based target definiton in the 3D based radiotherapy treatment of glioblastoma multiforme patients. First Hungarian experiences ]

SIPOS Dávid, TÓTH Zoltán, LUKÁCS Gábor, BAJZIK Gábor, HADJIEV Janaki, CSELIK Zsolt, REPA Imre, KOVÁCS Árpád

[Introduction - Radiotherapy plays important role in the complex oncological treatment of glioblastoma multiforme (GBM). The modern 3D radiotherapy treatments are based on cross-sectional CT and MR information, however more attention is being paid to functional hybrid imaging describing the biological and functional morphology of tumor lesions. 18F-DOPA is an amino acid tracer with high specificity and sensitivity, which may play an important role in the precise definition of target volume in the irradiation process of GBM patients. Our study presents the first experiences with 18F-DOPA based PET/CT/MR 3D irradiation planning process. Methods - In Hungary the 18F-DOPA radiotracer has been available for clinical use since September 2017. Between September 2017 and January 2018, at the Somogy County Kaposi Mór Teaching Hospital Dr. József Baka Diagnostic, Radiation Oncology, Research and Teaching Center 3 histologically verified glioblastoma multiforme patients received 18F-DOPA based 3D irradiation treatment. In the contouring process the native planning CT scanes were fused with the PET/MR series (T1 contrast enhanced, T2 and 18F-DOPA sequences). We defined 18F-DOPA uptake volume (BTV-F-DOPA), the T1 contrast enhanced MRI volume (GTV-T1CE), and the volume of the area covered by oedema on the T2 weighted MRI scan (CTV-oedema) in all patients. We also registered the BTV-F-DOPA volumes not covered by the conventional MR based target volumes. Results - Examining the 3 cases, the average volume of 18F-DOPA tumor was 22.7 cm3 (range 15.3-30.9; SD = 7.82). The average GTV T1 CE was found to be 8.7 cm3 (range 3.8-13.2; SD = 4.70). The mean CTV oedema volume was 40.3 cm3 (range 27.7-57.7; SD = 15.36). A non-overlapping target volume difference (BTV-F-DOPA not covered by CTV oedema area) was 4.5 cm3 (range 1-10.3; SD = 5.05) for PTV definition. Conclusion - Based on our results the tumor area defined by the amino acid tracer is not fully identical with the MRI defined T2 oedema CTV. 18F-DOPA defined BTV can modify the definiton of the PTV, and the radiotherapy treatment. ]

Clinical Neuroscience

[Childhood sporadic type of hemiplegic migraine with arteria cerebri media hypoperfusion]

NAGY Csaba, BAJZIK Gábor, SKOBRÁK Andrea, CSORBA Eszter, LAJTAI Anikó, BALOGH Gábor, NAGY Ferenc, VAJDA Zsolt

[Hemiplegic migraine is a rare subtype of migraine that is associated with reversible motor weakness in the aura phase. This is an uncommon form of migraine usually starting in childhood. The purpose of this case report is to highlight the differential diagnostic difficulty of the first attack. We describe a case, where the fluctuating unilateral motor weakness and aphasia suggested that the patient had ischaemic stroke. Nevertheless the brain MRI and MR angiography, the measured 5-hydroxyindole acetic acid (5-HIAA) concentration changes and the spontaneously improving clinical status proved the diagnosis of hemiplegic migraine. The MRI and MR angiography was very beneficial in establishing the correct diagnosis in this case. To distinguish between the familiar and sporadic type of hemiplegic migraine further genetic tests can be carried out.]

Clinical Neuroscience

Chronic cerebrospinal venous insufficiency - disease or misdiagnosis?

PÁNCZÉL Gyula, SZIKORA István, BERENTEI Zsolt, GUBUCZ István, MAROSFŐI Miklós, KOVÁCS Krisztina, RÓZSA Anikó, RÓZSA Csilla

Background and purpose - Former studies reported internal jugular vein stenosis in patients with multiple sclerosis. We aimed to evaluate if these venous stenoses were real and cerebral venous outflow of patients with multiple sclerosis differed from that of normal controls. Methods - 20 controls were prospectively investigated by angiography and duplex ultrasound. Seven patients with multiple sclerosis underwent angiography in other centers; we reviewed these registrations and performed venous ultrasound examinations. Results - Angiography displayed >50% stenosis of internal jugular vein in 19 controls (69±17% on the right and 73±13% on the left side) and <50% stenosis in 1 control (43.5% and 44.6%). All 7 patients had at least one-sided stenosis. The mean degree of stenosis was 63±16% on the right and 67±13% on the left side. There was no significant difference in the degree of stenosis between patients and controls. However, these “stenoses” disappeared if the contrast agent was injected at a catheter position below the orifice of the subclavian vein during venography. The venous flow volume was also similar between groups: 479.7±214.1 and 509.8±212.0 ml/min (right and left side) in the patients and 461.3±224.3 and 513.6±352.2 ml/min in the control group; p=0.85 and 0.98 (right and left). Color and power duplex imaging also revealed normal blood flow of the internal jugular vein in all patients and controls. Conclusion - The cerebral venous status of patients with multiple sclerosis and controls were similar. The angiographic “stenoses” were virtual, caused by the contrast dilution effect of the non-contrast blood stream of the subclavian vein.

Clinical Neuroscience

Cerebral cavernous malformation type 1 with retinal blood vessel tortuosity and KRIT1 gene mutation

KALMÁR Tibor, MARÓTI Zoltán, VADVÁRI Árpád, HALMOSI Ágnes, KÁLOVITS Ferenc, KÁLMÁN Bernadette

Cerebral cavernous malformations (CCMs) represent a relatively rare and heterogeneous clinical entity with mutations identified in three genes. Both sporadic and familial forms have been reported. We present a young female patient with episodic paresthesia and headaches, but without acute neurological deficits. Her mother had a hemorrhaged cavernoma surgically removed 21 years ago. Cranial magnetic resonance imaging revealed multiple cavernous malformations in the size of a few millimeters and the ophthalmologic exam detected retinal blood vessel tortuosity in the proband. Targeted exome sequencing analysis identified a nonsense mutation in exon 16 of the KRIT1 gene, which resulted in a premature stop codon and a truncated protein underlying the abnormal development of cerebral and retinal blood vessels. This mutation with pathogenic significance has been reported before. Our case points to the importance of a thorough clinical and molecular work up despite the uncertain neurological complaints, since life style recommendations, imaging monitoring and genetic counseling may have major significance in the long term health of the patient.