1. Measurement of spinal cord blood flow by an inhalation method and intraarterial injection of hydrogen gas 
Itoshi Harakawa, MD, Takashi Yano, MD, Tsunehisa Sakurai, MD, Naomichi Nishikimi, MD, Yuji Nimura, MD 
Journal of Vascular Surgery 
Volume 26, Issue 4, Pages (October 1997)
DOI: /S (97)
Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

2. Fig. 1
Upper electrode is 2 mm in diameter. Tip of catheter is globular to avoid spinal cord injury, and platinum electrode for measuring H2 clearance is placed 3 mm from tip. Lower electrode is 200 μm in diameter. Tip of catheter is sharp to minimize tissue injury by spinal cord puncture. Platinum electrode for measuring H2 clearance is placed in tip.
Journal of Vascular Surgery  , DOI: ( /S (97) )
Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

3. Fig. 2
Upper figure shows example of BF recording before cross-clamping. BF is calculated from lower figure. T/2 is the half time in minutes for desaturation of hydrogen. The relationship of clearance to passage of time can be seen.
Journal of Vascular Surgery  , DOI: ( /S (97) )
Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

4. Fig. 3
Spinal cord cross-section and BF of each region by inhalation method (ml/min/100 g).
Journal of Vascular Surgery  , DOI: ( /S (97) )
Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

5. Fig. 4
Aortic clamping and blood flow (inhalation method and intraarterial injection method).
Journal of Vascular Surgery  , DOI: ( /S (97) )
Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

6. Fig. 4
Aortic clamping and blood flow (inhalation method and intraarterial injection method).
Journal of Vascular Surgery  , DOI: ( /S (97) )
Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

7. Fig. 5
Spinal cord specimen does not show injury caused by catheter, such as bleeding or necrosis.
Journal of Vascular Surgery  , DOI: ( /S (97) )
Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions