| Japanese |
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| Title | 過誤腫性肺脈管筋腫症11例の局所換気血流分布に関する検討 |
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| Subtitle | 原著 |
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| Authors | 有泉光子*, 富永滋** |
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| Organization | *東京慈恵会医科大学放射線医学講座, **順天堂浦安病院内科 |
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| Journal | 核医学 |
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| Volume | 34 |
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| Number | 9 |
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| Page | 779-787 |
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| Year/Month | 1997/9 |
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| Article | 原著 |
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| Publisher | 日本核医学会 |
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| Abstract | 「要旨」稀な疾患である過誤腫性肺脈管筋腫症11例を対象として, 133Xeガスおよび99mTc-MAAによる局所的換気血流分布について検討した. 換気分布は133Xeガスの洗い出し曲線からHeight over area法によりMean Transit Time(MTT)を算出し, 左右肺をそれぞれ上, 中, 下肺野に分割表示した. われわれは洗い出し分布のパターンを下肺野でMTTが最も延長しているa型, 中, 上肺野で最も延長しているb型, 各肺野のMTTがほぼ均等に延長しているc型の3型に分類した. 本症ではb型が16肺と最も多く, a型が4肺, c型2肺であり, 73%は中上肺野の洗い出し時間が優位に遅延していた. これを反映して中肺野の血流は健常人に比較して低下していた. 経過を観察し得た3例は閉塞性および拘束性障害が進行したが, 洗い出し分布の型には変化がなく, 洗い出しの型は病期の進行により基本的には変化しないことが示唆された. |
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| Practice | 臨床医学：一般 |
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| Keywords | Pulmonary lymphangiomyomatosis, 133Xe gas washout study, Mean transit time(MTT), 99mTc-MAA perfusion study. |
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| English |
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| Title | Regional Pulmonary Function by 133Xe Gas and 99mTc - MAA in 11 Cases with Lymphangiomyomatosis (LAM) |
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| Subtitle | Original Articles |
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| Authors | Mitsuko ARIIZUMI*, Shigeru TOMINAGA** |
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| Authors(kana) | |
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| Organization | *Department of Radiology, The Jikei University School of Medicine, **Department of Internal Medicine, Juntendo University Urayasu Hospital |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 34 |
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| Number | 9 |
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| Page | 779-787 |
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| Year/Month | 1997/9 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary]The evaluation of the regional distribution of ventilation and perfusion was performed by 133Xe gas and 99mTc-MAA in 11 patients with LAM. We divided the lung images into six lung regions, the upper, middle, and lower lung fields of the left and right lungs, and classified the ventilation distribution pattern as one of three types according to the washout time. Prolongation of mean transit time(MTT)predominantly in the lower lung field was classified as type a, predominantly in the middle and upper lung fields as type b, and diffuse prolongation of MTT throughout the lung as type c. The classification included 16 cases of type b, four of type a, and two of type c. The 133Xe washout was predominantly delayed in the middle and upper lung fields in 73%of LAM cases. Pulmonary perfusion was reduced in the middle lung field and relatively increased in the lower lung field in comparison with healthy controls. A follow-up study of 133Xe gas lung scan was performed in three cases of type b. All the cases deteriorated and presented obstructive and restrictive disturbances without changes in the distribution pattern. These findings suggested that the washout type did not change with the progress of the stage of the disease. |
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| Practice | Clinical medicine |
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| Keywords | Pulmonary lymphangiomyomatosis, 133Xe gas washout study, Mean transit time(MTT), 99mTc-MAA perfusion study. |
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