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Abstract
Methods
Eight male New Zealand white rabbits with average weight of 3kg were used. A 10 x 10 cm unipedicled fasciocutaneous island flap was elevated based on the left superficial inferior epigastric vessel. The surface temperatures on designed flap were checked with DITI for 24 hours after the operation. On 14th day after the operation, the surviving area was measured and compared with DITI image which was taken on 24 hours after the operation using digital analysis software ImageJ. Statistical analysis was evaluated by paired T-test
Results
On DITI image 24 hours after the flap elevation, distal portion of the flap showed remarkable color change. The average percentage and the standard deviation of the survival area of the flap which is predicted by DITI and the average percentage and the standard deviation of the survival area of the flap which was actually measured 2 weeks after flap elevation were 55.3 (16.6), 56.2 (18.0), respectively. This shows no significant difference between the two.
Objectives
Monitoring viability of flap is important. The flap survival depends on the vascularity of the flap, on which the skin temperature depends. The authors applied digital infrared thermographic imaging (DITI) for monitoring the vascular supply of the flap and for the prediction of the prognosis of the flap survival.
Methods
Eight male New Zealand white rabbits with average weight of 3kg were used. A 10 x 10 cm unipedicled fasciocutaneous island flap was elevated based on the left superficial inferior epigastric vessel. The surface temperatures on designed flap were checked with DITI for 24 hours after the operation. On 14th day after the operation, the surviving area was measured and compared with DITI image which was taken on 24 hours after the operation using digital analysis software ImageJ. Statistical analysis was evaluated by paired T-test
Results
On DITI image 24 hours after the flap elevation, distal portion of the flap showed remarkable color change. The average percentage and the standard deviation of the survival area of the flap which is predicted by DITI and the average percentage and the standard deviation of the survival area of the flap which was actually measured 2 weeks after flap elevation were 55.3 (16.6), 56.2 (18.0), respectively. This shows no significant difference between the two.
REFERENCES
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Fig. 1.
Design and elevation of fasciocutaneous island flap. (A) Preoperative marking of the flap, (B) Intraoperative view of 10 x 10 cm sized left superficial inferior epigastric artery based fasciocutaneous island flap elevation.
Fig. 2.
Post operative 2 weeks view. (A) Flap shows definite distal necrosis with black eschar, its DITI scan (B) which showed color image that higher temperature as more similar to red color. The yellow colored area matched with distal necrotic area of the flap.
Fig. 3.
DITI scan change for pre-operation, POD1, POD7, POD14. (A) Flap image after 2 weeks from surgery, (B) (from left upper to clockwise rotation) which shows DITI scan for pre-operation, POD1, POD7, POD14, there is no significant color change from POD1 to POD14.
Table 1.
Comparison of expected survival area by DITI and measured survival area
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