Introduction: Although the optimal dosage of supplements is determined during a consultation using the Bi-Digital O-Ring Test (BDORT; Omura, Y. in New York, 1977–2024) to improve the patient's progress, achieving the expected treatment results can sometimes be challenging. We have investigated the causes and countermeasures for this problem and will present them with a case study. Subjects and Methods: The patient's drug match was adjusted so that the cancer tissue sample used as a reference control substance (RCS) would not react with BDORT, thereby enhancing thymus function. For patients who did not easily fall to the target, computed tomography (CT) images were obtained, and the optimal dose of the supplement was studied based on the distance from the patient's skin surface. Results: We found that the greater the distance from the lesion (6, 13, 15, and 29 cm), the lower the optimal amount of Lactobacillus. It is necessary to check the front, back, and sides of the BDORT examination to determine the distance from the lesion. Consideration: (1) If the course of treatment is unsatisfactory, it may indicate that the distance from the skin surface being examined to the lesion is too great, and a CT scan should be performed to examine the images. (2) When examining the patient on a body map, the optimal dose of the drug should be determined at the shortest distance from the lesion, considering the front, back, and sides of the body. Conclusion: To determine the optimal dosage of a drug that will provide a therapeutic effect, it is necessary to obtain CT images and examine the patient in 3D.