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Tc-99m Pertechnetate / TI-201 감영 신티그라피에서 부갑상선 선종으로 오인된 흉선종 1 예
정용안(Yong An Chung),유이령(Ie Ryung Yoo),김성훈(Seong Jang Kim),정수교(Soo Kyo Chung),왕영필(Young Pil Wang),정지한(Ji Han Jung),이교영(Kyo Young Lee),김병기(Byung Kee Kim) 대한핵의학회 2001 핵의학 분자영상 Vol.35 No.4
A large superior mediastinal mass was found incidentally by ultrasonography in a 60-year-old man. There was an abnormal accumulation of Tl-201 in the lower pole of left thyroid gland, extending into left superior mediastinum on Tc-99m pertechnetate/Tl-201 subtraction scan. Laboratory findings relating thyroid and parathyroid were all within normal range. We considered the mass as a non-functioning parathyroid adenoma tentatively. However, subsequent surgery and pathologic examination revealed the mass to be a benign mixed thymoma. We report a case of patient with thymoma showing unusual Tc-99m pertechnetate/Tl-201 subtraction imaging and laboratory findings, and suggest to consider the possibility of other mediastinal tumors rather than parathyroid adenoma. (Korean J Nucl Med 2001;35:274-279)
정수교(Soo Kyo Chung),신경섭(Kyung Sub Shinn),양동헌(Dong Hunn Yang),성미숙(Mi Sook Sung),이정휘(Jung Whee Lee) 대한핵의학회 1997 핵의학 분자영상 Vol.31 No.3
N/A Temporomandibular (TM) joint pain results from many etiologic factors. The aim of this study was to evaluate the utility of Bone SPECT in patients with TM joint pain. The subjects were 34 patients with TM joint pain. All patients underwent plain radiography, planar bone scan, and Bone SPECT. The intensity of radioisotope uptake at TM joint was graded into three; no increased uptake above three background activity as grade 0, uptake similar to occipital bone as grade I, and uptake similar to maxillary sinus as grade II. Clinical findings and therapeutic methods were reviewed. Twenty-seven patients (80%) out of 34 patients with TM joint pain had increased uptake in bone SPECT. Twenty-one (78%) out of 27 patients had increased uptake in the mandibular condyle and remaining six patients (22%) had uptake in the mandibular and maxillary arch, which proved to be dental problem. Seven patients out of 34 were grade as 0, four (12%) were grade I, 23 (68%) were grade II. Four patients with grade I had clicking sound and symptoms which were subsided with medication in all cases. Among 23 patients with grade II, 7 patients had clicking sound and 14 patients underwent medication and decompression therapy. With Planar bone scan, 11 cases (32%) had increased uptake in TM joint area. Plain radiography revealed narrowing, distension, erosion and limitation of TM joint in 16 cases (47%). Bone SPECT can be valuable for screening and managing the patients with TM joint pain. Patients with grade II needed intensive treatment such as joint aspiration. However degree of the radioisotope uptake did not well correlated with clinical symptoms.
정수교,양우진,손형선,신경섭,박용휘 ( Soo Kyo Chung,Woo Jin Yang,Hyung Sun Sohn,Kyung Sub Shinn,Yong Whee Bahk ) 대한핵의학회 1994 핵의학 분자영상 Vol.28 No.3
Pulmonary clearance of Tc99m DTPA(PCD) has been used for the measurement of pul-monary epithelial permeability. It, has been reported to be increased not only in variety of pul-monary diseases including ARDS, interstitial fibrosis, and smokers, but also in normal subject,s on posit.ive end expiratory pre,ssure respirator, or after exereise. It was also noted that decrease of pulmonary blood flow due to pulmonary arterial obstruction results in delayed PCD. Normal range of PCD varies with institutes. We prospectively rneasured PCD in 17 normals (5 males and 12 females) consisted of staffs and trainees in the department of radiology of Kangnam St, Marys hospital using original Bark Nebulizer (India). Age ranged from 32 to 43 years. 370 MBq of Tc99m DTPA was inhaled in supine position and supine posterior images were subsequently obtained with 1 min/frame, 64 x 64 matrix and word mode for 30min. Regions of in 1,erest. Were set on each lung, whole lungs, and upper, middle and lower thirds of right lung, respectively. Best fit regression curve was obtained by least square method from inilial 7min after peak act,ivitu on each curve and time for half clearance of maximum activity (tl/2) was calculat,ed. Mean tl/2 was 51 +- 11.2min for whole lung, There was no significant difference between tl/ 2 of right and left lungs, Initial uptake was higher in the lower third and tl/2 was shorter in the lower third than in the upper third(P<0.05). We reviewed several reports on PCD and compared our data with the others. In t,his study, faster clearance in the lower third may be due to the position imaged with or the environment the subject.s belong to, and further invest,igation is under way.