Skin ultrasonography (HFUS) and magnetic resonance (MRI) have advanced significantly in dermatology. HFUS, developed by Alexander and Miller, has evolved into B-mode imaging for dermatological assessments. Zemtsov, a leading expert, was among the first US physicians to master HFUS and has used it in image-guided superficial radiation therapy (IG-SRT) for skin cancers, achieving high cure rates. HFUS also aids in tumor depth assessment and monitoring treatment response. New HFUS machines offer Doppler imaging, telemedicine, and high-definition imaging. Zemtsov's work has influenced the use of HFUS in cosmetic procedures, such as preventing filler injection into blood vessels and guiding hyaluronidase administration. MRI has been instrumental in diagnosing skin lesions, with Zemtsov being among the first to image skin melanocytic and non-melanocytic lesions. MRI provides excellent correlation with histological findings and has been used to assess tumor depth and recurrence. Zemtsov also pioneered in vivo magnetic resonance spectroscopy (MRS), revealing phosphocreatine in skin tissue, which is crucial for skin bioenergetics. MRI is now used for scalp alopecia, atopic dermatitis, and brain functional imaging related to skin sensations. MRI and MRS have expanded into new applications, including evaluating dermatofibrosarcoma and assessing perineural involvement in skin cancers. Zemtsov's research has influenced medical insurance coverage for skin MRI. Therapeutic applications include high-intensity focused ultrasound (HIFU) for tattoo removal and warts, and thermal MRI for tumor ablation. Zemtsov's contributions have significantly advanced the fields of skin ultrasonography and magnetic resonance, highlighting the role of the journal and its editorial board in these developments.Skin ultrasonography (HFUS) and magnetic resonance (MRI) have advanced significantly in dermatology. HFUS, developed by Alexander and Miller, has evolved into B-mode imaging for dermatological assessments. Zemtsov, a leading expert, was among the first US physicians to master HFUS and has used it in image-guided superficial radiation therapy (IG-SRT) for skin cancers, achieving high cure rates. HFUS also aids in tumor depth assessment and monitoring treatment response. New HFUS machines offer Doppler imaging, telemedicine, and high-definition imaging. Zemtsov's work has influenced the use of HFUS in cosmetic procedures, such as preventing filler injection into blood vessels and guiding hyaluronidase administration. MRI has been instrumental in diagnosing skin lesions, with Zemtsov being among the first to image skin melanocytic and non-melanocytic lesions. MRI provides excellent correlation with histological findings and has been used to assess tumor depth and recurrence. Zemtsov also pioneered in vivo magnetic resonance spectroscopy (MRS), revealing phosphocreatine in skin tissue, which is crucial for skin bioenergetics. MRI is now used for scalp alopecia, atopic dermatitis, and brain functional imaging related to skin sensations. MRI and MRS have expanded into new applications, including evaluating dermatofibrosarcoma and assessing perineural involvement in skin cancers. Zemtsov's research has influenced medical insurance coverage for skin MRI. Therapeutic applications include high-intensity focused ultrasound (HIFU) for tattoo removal and warts, and thermal MRI for tumor ablation. Zemtsov's contributions have significantly advanced the fields of skin ultrasonography and magnetic resonance, highlighting the role of the journal and its editorial board in these developments.