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Kei Shikuma, MD, Toyofumi F

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1 Radiologic and Functional Analysis of Compensatory Lung Growth After Living-Donor Lobectomy 
Kei Shikuma, MD, Toyofumi F. Chen-Yoshikawa, MD, PhD, Tsuyoshi Oguma, MD, PhD, Takeshi Kubo, MD, PhD, Keiji Ohata, MD, Masatsugu Hamaji, MD, PhD, Atsushi Kawaguchi, PhD, Hideki Motoyama, MD, PhD, Kyoko Hijiya, MD, PhD, Akihiro Aoyama, MD, PhD, Hisako Matsumoto, MD, PhD, Shigeo Muro, MD, PhD, Hiroshi Date, MD, PhD  The Annals of Thoracic Surgery  Volume 105, Issue 3, Pages (March 2018) DOI: /j.athoracsur Copyright © 2018 The Society of Thoracic Surgeons Terms and Conditions

2 The Annals of Thoracic Surgery 2018 105, 909-914DOI: (10. 1016/j
The Annals of Thoracic Surgery  , DOI: ( /j.athoracsur ) Copyright © 2018 The Society of Thoracic Surgeons Terms and Conditions

3 Fig 1 Ipsilateral residual lung volume was measured by three-dimensional computed tomography preoperatively and at 1 year after resection. Upper (U) and middle (M) lobes are stretched and fit in the thorax in the postoperative state. Representative images are shown. (L = lower lobe.) The Annals of Thoracic Surgery  , DOI: ( /j.athoracsur ) Copyright © 2018 The Society of Thoracic Surgeons Terms and Conditions

4 Fig 2 A representative computed tomography (CT) imaging mapping of high attenuation volume (HAV), middle attenuation volume (MAV), and low attenuation volume (LAV). The green area shows the HAV area (≥ –700 Hounsfield units [HU]). The red area shows the MAV area ( –701 to –950 HU). The blue area shows the LAV area (< –951 HU). The percentiles of these volumes were measured as %HAV, %MAV, and %LAV on three-dimensional CT. The Annals of Thoracic Surgery  , DOI: ( /j.athoracsur ) Copyright © 2018 The Society of Thoracic Surgeons Terms and Conditions

5 Fig 3 Representative images are shown of the D value measured preoperatively and at 1 year postoperatively. The D-value measurement is a power law analysis of low attenuation area clusters. The D value was examined by custom-made software and calculated as the average of all two-dimensional axial chest computed tomography images. Each of the colored areas indicates clusters of low attenuation areas. The images were obtained from the same donor. The Annals of Thoracic Surgery  , DOI: ( /j.athoracsur ) Copyright © 2018 The Society of Thoracic Surgeons Terms and Conditions


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