Dr. Sato asks himself, “Is this depth really appropriate?” every time he performs treatment. Increasing the HIFU output can produce temporary results, but in most cases, this does not lead to long-term satisfaction. Dr. Sato uses a handheld ultrasound scanner to check the patient’s anatomical structure to ensure that the required energy is delivered to the correct location. In this seminar, he explained safe and effective treatment methods based on anatomy using ULTRAcel[Zi:] with case studies and data.
- INDEX
- Four Cartridges Are Enough—ULTRAcel[Zi:] Enables Precise Depth Settings (00:50–)
- The Depth Was Shallower Than Expected: Actual Subcutaneous Structures Observed with a Handheld Ultrasound Scanner (02:40-)
- Balancing Safety and Effectiveness: Practical Knowledge of HIFU Irradiation Based on Case Studies (05:06–)
- The Key to Precision Medicine Lies in Ultrasound Scanning: HIFU's New Standard of “Anatomical Irradiation” (19:20-)
Four Cartridges Are Enough—ULTRAcel[Zi:] Enables Precise Depth Settings (00:50–)
Among the recent advances in HIFU devices, Jeisys’ ULTRAcel[Zi:] (Korean name: LINEARZ) offers performance that sets it apart from conventional HIFU devices. Its most notable features are the ability to switch between dot and linear irradiation types with a single cartridge, and the ability to adjust the depth in 0.5 mm increments. This enables the creation of highly customized treatment plans tailored to the varying depths of subcutaneous tissue in each area, particularly for different target layers such as the SMAS, subcutaneous fat, and dermis. Additionally, the output range is broad, from 0.1 to 3 J, and real-time temperature display of the cartridge is available, ensuring safety.
The Depth Was Shallower Than Expected: Actual Subcutaneous Structures Observed with a Handheld Ultrasound Scanner (02:40-)
To maximize the treatment effect, it is important to visually confirm that HIFU is reaching the target area. He used a handheld ultrasound scanner to measure the exact depth of the SMAS and fat layers in each part of the face. The SMAS located at the front edge of the masseter muscle was found to be at a depth of approximately 5.4 mm. This depth may not be reached with a 4.5 mm cartridge. On the other hand, in the preauricular region, the SMAS is located at a shallow depth, so depending on the depth of irradiation, there is a risk of irradiation to non-target areas (e.g., parotid gland). Similarly, it was confirmed that cartridges with a depth of 3 mm or 4.5 mm may not be effective in some areas of the fat layer. Therefore, depth adjustment according to the site is essential.
Balancing Safety and Effectiveness: Practical Knowledge of HIFU Irradiation Based on Case Studies (05:06–)
In this case, ultrasound was used to confirm the target layer, and HIFU was applied by appropriately combining Dot Mode and Linear Mode. 5mm Linear Mode was used for fat reduction in the submental area, and 3mm Dot Mode was used for cheek fat, with depth and output adjusted in detail for other areas as well. After two sessions, facial contour tightening and volume reduction were observed. Adjusting the settings to achieve sustained results rather than immediate contraction, the treatment was successful. He emphasized that “higher output does not necessarily lead to better results.”
The Key to Precision Medicine Lies in Ultrasound Scanning: HIFU’s New Standard of “Anatomical Irradiation” (19:20-)
In this seminar, the importance of irradiation based on anatomical understanding was emphasized. Especially, the use of ultrasound scanning, which allows real-time observation of the positions of the SMAS, fat, and nerves/blood vessels, significantly improves accuracy and safety. Currently, clinics capable of performing ultrasound scanning are limited, but it may become a standard protocol in the future. By combining devices like ULTRAcel[Zi:] with flexible depth settings and ultrasound scanners, it is possible to provide more scientific HIFU treatments with higher patient satisfaction.
