OVERVIEW DOCUMENT

The detailed structural documentation will be shown below. This is a summary of the operational layer and clinical evidence…

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AUTHOR & ACADEMIC PRINCIPAL

Nguyễn Đình Quang

Independent medical researcher | Founder, Vien Gut | System architect of the HOW — DATA-to-operate / operational layer

HOW AND DATA-TO-OPERATE DESIGN TEAM — VIEN GUT

Nguyễn Đình Quang Huy HOW — DATA-to-operate design contributor | Operational management, transfer coordination — Vien Gut Model

Huỳnh Phước Đại, Nguyễn Sơn Patient-language editorial | Communications data governance, deployment and transfer support — Vien Gut Model

ACADEMIC SUPPORT & WHAT (GUIDELINE) BENCHMARKING — INTERNATIONAL EXPERT GROUP

NHÓM CHUYÊN GIA QUỐC TẾ

Nicola Dalbeth — Co-author of ACR Recommendations 2012 and 2020.

Thomas Bardin, Pascal Richette — Co-authors of EULAR Recommendations — together with experts in cardiology, nephrology, hepatology, diabetology, diagnostic imaging, and biostatistics at Université Paris Cité, France, and Sorbonne University. Transfer of WHAT from treatment guidelines for gout and comorbidities; international benchmarking of WHAT; HOW design support — Vien Gut Model.

DATA GOVERNANCE TEAM — VIEN GUT

Trương Ánh Dương, Huỳnh Hồng Đức Data governance, transfer support — Vien Gut Model

Lê Việt Anh Data governance — Vien Gut

TREATING PHYSICIAN GROUP + MULTIDISCIPLINARY TEAM — VIEN GUT POLYCLINIC

Clinical HOW deployment: risk stratification, opportunity window, longitudinal monitoring, risk management, polypharmacy governance, referral safety valve activation — Vien Gut Model.

RESEARCH SITE

Franco-Vietnamese Center for Research on Gout and Chronic Diseases, Vien Gut Polyclinic, 13A Hồng Hạ Street, Tân Sơn Hòa Ward, Ho Chi Minh City, Vietnam. 
Abstract C.1 – Crystal-Free at the Time of Assessment

Abstract

DOCUMENT C.1 — PART C: VERIFICATION TARGETS

MULTI-CENTER VERIFICATION INVITATION:
Verification Target: Crystal-Free at the Time of Assessment

“Among all chronic diseases, gout is the only one that allows for explicit verification through ultrasound imaging: before treatment — crystal deposition; after treatment — crystal-free [1]. This objective result is consistent with the principles of 18 international guidelines over the past 20 years: gout is curable at the time of assessment if its physical material basis — deposited urate crystals — is eliminated [1, 2].”

Crystal-Free Definition (Target 1)

The state of complete dissolution of MSU crystals from all joints, tendons, and soft tissues — confirmed by OMERACT ultrasound [3] (**Caliper mm² = 0**) at least twice 6 months apart, combined with sUA maintained below target and no flares for 12 months [3, 4].

Advantages of OMERACT Ultrasound

**Vien Gut** chooses ultrasound over DECT for practicality: low cost, radiation-free, and high sensitivity to small changes in crystals and tophi, allowing for continuous longitudinal follow-up over many years [5, 6].

Resolving 9 Layers of Systemic Fracture

Document C.1 analyzes the 9-layer transition sequence required to move from the ‘curable’ principle to the ‘cured’ outcome: from scientific foundations and guidelines to outcome standardization and patient co-creation [7, 8]. The **Vien Gut** Model provides the **HOW & DATA-to-operate** architecture to overcome structural bottlenecks currently faced by fragmented medicine [9, 10].

Clinical Verification Results (07/2024 – 01/2026)

**155 patients** achieved full Crystal-Free status at the time of assessment [4, 11].
This serves as evidence that the **HOW gap** can be filled when the operational architecture is sufficiently complete [12].

International collaboration is a pillar of Document C.1, initiated by the **ReViGore40** study (NCT06669000) in partnership with Prof. Pascal Richette (France) and Paris Cité University to determine crystal dissolution time in complex chronic multimorbidity cohorts [13, 14].

© 2026 Vien Gut | Document C.1 — Verification Target: Crystal-Free | Systematizing 18 Years of Integrated Clinical Practice.

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